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From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: linux-amlogic@lists.infradead.org, khilman@baylibre.com
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] ARM: dts: meson8b: odroidc1: enable the SDHC controller
Date: Sat, 20 Jun 2020 18:36:54 +0200
Message-ID: <20200620163654.37207-4-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20200620163654.37207-1-martin.blumenstingl@googlemail.com>

Odroid-C1 has an eMMC connector where users can optionally install an
eMMC module. The eMMC modules run off a 1.8V VQMMC supply which means
that HS-200 mode can be used (this is the highest mode that the SDHC
controller supports). Enable the SDHC controller so eMMC modules can be
accessed.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 arch/arm/boot/dts/meson8b-odroidc1.dts | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
index cb21ac9f517c..0c26467de4d0 100644
--- a/arch/arm/boot/dts/meson8b-odroidc1.dts
+++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
@@ -15,6 +15,7 @@ / {
 	aliases {
 		serial0 = &uart_AO;
 		mmc0 = &sd_card_slot;
+		mmc1 = &sdhc;
 	};
 
 	chosen {
@@ -26,6 +27,11 @@ memory {
 		reg = <0x40000000 0x40000000>;
 	};
 
+	emmc_pwrseq: emmc-pwrseq {
+		compatible = "mmc-pwrseq-emmc";
+		reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		blue {
@@ -310,6 +316,26 @@ &saradc {
 	vref-supply = <&vcc_1v8>;
 };
 
+&sdhc {
+	status = "okay";
+
+	pinctrl-0 = <&sdxc_c_pins>;
+	pinctrl-names = "default";
+
+	bus-width = <8>;
+	max-frequency = <100000000>;
+
+	disable-wp;
+	cap-mmc-highspeed;
+	mmc-hs200-1_8v;
+	no-sdio;
+
+	mmc-pwrseq = <&emmc_pwrseq>;
+
+	vmmc-supply = <&vcc_3v3>;
+	vqmmc-supply = <&vcc_1v8>;
+};
+
 &sdio {
 	status = "okay";
 
-- 
2.27.0


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  parent reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-20 16:36 [PATCH 0/3] ARM: dts: use the SDHC MMC controller for eMMC Martin Blumenstingl
2020-06-20 16:36 ` [PATCH 1/3] ARM: dts: meson: add the SDHC MMC controller Martin Blumenstingl
2020-06-20 16:36 ` [PATCH 2/3] ARM: dts: meson8b: ec100: enable the SDHC controller Martin Blumenstingl
2020-06-20 16:36 ` Martin Blumenstingl [this message]
2020-07-13 19:03 ` [PATCH 0/3] ARM: dts: use the SDHC MMC controller for eMMC Kevin Hilman
2020-07-13 19:21 ` patchwork-bot+linux-amlogic

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